TALKEETNA: Kids who were held at gunpoint said the two masked suspects appeared to be women.

WASILLA -- Alaska State Troopers say they have arrested a woman they believe was involved in the Talkeetna robbery in which seven trick-or-treaters were held up at gunpoint for their candy on Halloween.

Amber M. Martin, 20, of Wasilla, was taken into custody after Houston police stopped her vehicle for an equipment violation near Mile 53 of the Parks Highway on Friday night, troopers said in a written statement. She has been charged with six counts of robbery and seven counts of assault.

The robbery happened late Wednesday afternoon when a truck that had just passed seven costumed kids on Talkeetna's Main Street made a U-turn, came back and stopped, according to the statement and Sgt. Craig Allen with the Alaska Bureau of Investigation. Two people wearing ski masks hopped out, fired a shot from a handgun into the air and threatened the children, then took six bags of candy and an iPhone that a parent had sent along in case of problems.

The kids gave troopers the truck's license plate number and said both masked suspects appeared to be women, according to an affidavit that investigator Chris Long filed with court papers.

Trooper spokeswoman Megan Peters said Saturday that troopers are looking for another suspect but didn't name him or her.

Two 24-year-old men -- Aaron Tolen of Wasilla and Michael Scott Wilson of Anchorage -- were arrested Wednesday night when Talkeetna residents spotted a truck like that described by the kids at Latitude 62, a bar and restaurant, Long's affidavit says.

Both men had handguns, the affidavit says. Troopers took both into custody on other charges, but neither has been charged with robbery.

According to Long's affidavit, Wilson told troopers that Martin and another woman showed up at a cabin where the two men were and said they'd robbed some kids.

According to Wilson, Long's affidavit says, "Wilson became irate and an argument ensued. Wilson and Tolen left the cabin and went to Latitude 62."

Tolen, however, denied there was an argument and said he knew nothing about the robbery, the affidavit says.

Tolen is being held on charges of hindering prosecution and making a false report for giving troopers a fake name. He was also charged with theft after a badge from a trooper's hat was found as Tolen was searched at the Mat-Su Pre-Trial Facility, Long's sworn statement says.

Wilson is charged with first-degree hindering prosecution and providing false information. He is also being held on parole violations from earlier convictions for theft, burglary, false report and unlawful evasion.

Martin was jailed at the Mat-Su Pre-Trial Facility with bail set at $20,000 plus court-approved third-party custodian. She appeared in District Court on Saturday and is scheduled to appear again Nov. 13, according to court records.